Ramsey was again on the scoresheet in their 2-1 Champions League win.
"I don't know if anybody is playing better," Wenger said when asked about his current form. "For me, I don't look at it like that.
"Aaron is playing well and that is most important, so is that he continues to improve.
"I thought it would be a tricky game here tonight. Before the game I was conscious Marseille would be well focused.
"They know they are not favourites, they had nothing to lose and the French are dangerous when they are in that position."
For the big stories and the banter follow us on Twitter: @tribalfootball